baber/WOPTO huggingface dataset:
Patent CA-1165817-A (CA)
Inventor: JOHNSON DOUGLAS L
IPC: G01S7/02
Filed: 1980-05-23
Granted: 1984-04-17
Abstract: BALANCED SEARCH LOOP   FOR METAL DETECTOR     Abstract A search loop for a metal detector is described having a feedback coil whose magnetic flux opposes that of the transmit coil to provide a balanced loop.  The balanced loop is thereby nulled and produces no output signal on the receive coil when such loop is positioned in air remote from the ground and no metal object is present.  The transmit coil, the feedback coil and the receive coil are supported coplanar with each other and the feedback coil is supported on the receive coil so that it is concentric therewith.          As a result of supporting the feedback coil on the receive coil, there is no relative movement between these two coils due to temperature changes or mechanical stress.  Such movement tends to produce false output signals in the receive coil.  In the preferred embodiment the feedback coil and the transmit coil are circular and are positioned concentric with a surrounding circular transmit coil.  In one embodiment an electrostatic shield is provided between the feedback coil and the receive coil to reduce capacitive coupling.  The balanced loop of the present invention can provide a balanced magnetic flux region within the receive coil even though it is not exactly concentric with the transmit coil so the loop is less expensive to manufacture but is capable of high sensitivity and good pinpointing of a target.
Patent CA-1143483-A (CA)
Inventor: FLANDERS DALE C
IPC: G03F1/22
Filed: 1980-05-27
Granted: 1983-03-22
Abstract: X-RAY LITHOGRAPHY AT ~ 100 .ANG. LINEWIDTHS USING X-RAY MASKS FABRICATED BY SHADOWING TECHNIQUES A method for producing X-ray masks with precisely controlled linewidths. The method comprises forming a relief structure with a predetermined cross-section. An X-ray absorber material is deposited at an oblique angle onto the relief structure.
Patent CA-1155735-A (CA)
Inventor: HELMREICH DIETER
IPC: H01L21/208
Filed: 1980-06-11
Granted: 1983-10-25
Abstract: METHOD FOR MAKING SILICON RODS ABSTRACT To make solar energy competitive, as compared against other sources of energy, inexpensive solar cells are required. To accomplish this goal, a method is provided which enables one to produce silicon rods having a columnar structure made of monocrystalline zones with preferential crystallographic orientation. This is effected by feeding a silicon melt into a crystallization chamber having a vertically-movable,cooled bottom face,under the influence of a temperature gradient directed parallel to the rod axis, so that the rods can be made continuously or semicontinuously with high drawing speeds.
Patent CA-1137935-A (CA)
Inventor: DELUCA RAYMOND F
IPC: A47K10/24
Filed: 1980-06-20
Granted: 1982-12-21
Abstract: ABSTRACT      A dispenser for wound rolls of flexible sheet material, such as, paper towels, toilet tissue or the like has inwardly facing tracks on the opposite inner side walls of the dispenser housing to receive therein outwardly projecting spindles carried by wound rolls to be dispensed for the rolls to move in succession downwardly relative to the tracks with a section of the lower end of each track slanting away from a feed roller mounted adjacent the lower end of the dispenser housing and each track having at such lower end section a pivotally mounted roll rotation driving guide biased toward the track center to form the lower side of each track section slanting away from the feed roller. A pressure roller is biased into rotating engagement with the feed roller for flexible sheet material to drivingly pass therebetween with the pressure roller having at least one resiliently deformable segment that is eccentric to the pressure roller axis to pick up the leading free end of sheet material on a full roll and lead it into the nip between the feed roller and pressure roller, this pressure roller also has axially spaced conical resilient portions along the length thereof with the conical portions facing from the opposite ends of the pressure roll inwardly toward the mid-point of the pressure roll to promote spreading out the sheet material passing between the feed roller and the pressure roller. A serrated cutting knife is pivotally mounted within the feed roller to sever the sheet material, the serrations on the knife being spaced to accommodate therebetween the deformable eccentric segment and the conical portions on the pressure roller during initial projection of the knife from within the feed roller in severing the sheet material. The cutting knife swings about an axis laterally displaced from the plane of a radially outward portion of the knife and cam followers are carried by the ends of the knife extending beyond the ends of the feed roller with the followers displaced from the pivot mounting axis of the knife. Stationary cams are mounted adjacent the ends of the feed roller with which the cam followers on the knife edge engage to positively project the knife cutting edge beyond the feed roller periphery and retract the cutting edge upon rotation of the feed roller.
Patent CA-1147717-A (CA)
Inventor: NUDENBERG WALTER
IPC: C08F4/00
Filed: 1980-08-20
Granted: 1983-06-07
Abstract: ABSTRACT OF THE DISCLOSURE a catalyst composition useful for the polymerization of alphaolefins is provided with an activator in combination with a primary catalyst system.  The activator makes the primary catalyst system more effective and/or maintains its activity for a a longer period and/or can be reactivated after it begins to lose activity.  The primary catalyst system is a vanadium compound and an organometallic compound of the formula RMgX, LiAlr4, or RAAL2XB, wherein R is a hydrocarbon radical having 1 to 12 carbon atoms, X is a halogen atom; A is a number from 2 to 6, and B is a number from 0 to 4, with the proviso that the sum of A and B is 6 and that at least one of the groups attached either to the vanadium compound or to the organometallic compound is a halogen atom. The activator is a chlorinated tetrahydrofurfuryl tetrahydro-furoate, an alkyl ester of chlorinated tetrahydrofuroic acid wherein the alkyl group has 1 to 8 carbon atoms, a chlorinated alkylene bistetrahydrofuroate wherein the alkylene group has 2 or 3 carbon atoms, a chlorinated oxy-bis [alkylene(2-furoate)], wherein the alkylene group is ethanedyl, 1,3 propanediyl, alkyl substituted ethanediyl or alkyl substituted 1,3 propanediyl wherein the alkyl group on the ethanediyl or 1,3 propanediyl has 1 to 8 carbon atoms, or bis(trichloromethyl)sulfone.
Patent CA-1141031-A (CA)
Inventor: DLUGOS DANIEL F
IPC: G07B17/00
Filed: 1980-08-26
Granted: 1983-02-08
Abstract: ABSTRACT OF THE DISCLOSURE A postage value computing system includes both apparatus and a method for determining the postage of an article to be mailed for various domestic and inter-national classes of postal service.  Postal information such as carrier type, class and destination data are introduced into the system and used to access a memory which stores common structured rate data.  Major rate structures are defined by weight headers which specify the upper and lower limits of weight ranges and the weight increments within those ranges.  To minimize memory requirements, foreign countries are grouped as a function of such common structured rate data including permissible weight limits.  Memory space is conseved through the utilization of a common postage computation routine including various equation subroutines for generating requisite postage values in accordance with the retrieved postage rate data.
Patent CA-1124346-A (CA)
Title: Printed circuit board faceplate assembly
Inventor: JORDAN THOMAS W
IPC: H05K7/14
Filed: 1980-09-29
Granted: 1982-05-25
Abstract: ABSTRACT OF THE DISCLOSURE            A pivotal faceplate assembly is provided for use in com-bination with printed circuit boards and assemblies housing such boards.  The faceplate assembly, of unitary construction, is pivotally mounted to a corner of the circuit board and performs the dual function of offering full frontal protection and acting as a handle for act-uation of the insertion/extraction and latching means, also formed as a part of the faceplate.
Patent CA-1134401-A (CA)
Inventor: SINISCAL PAUL D
IPC: B65G47/52
Filed: 1980-10-29
Granted: 1982-10-26
Abstract: BUNDLE ENTRY DEVICE Abstract of the Disclosure An apparatus for receiving bundles of newspapers from a first conveyor and for discharging the bundles into a second conveyor which is travelling in a direction substantially normal to the direction of travel of the first conveyor, the apparatus including a bundle receiving surface, means for laterally positioning each bundle at a preselected position on the surface and driven bundle engaging paddles for moving the bundles in a direction that has a component of movement that is substantially parallel to the direction of travel of the second conveyor.
Patent CA-1148623-A (CA)
Inventor: SIBLEY HENRY C
IPC: G08C19/26
Filed: 1980-11-20
Granted: 1983-06-21
Abstract: A VITAL RATE DECODER            ABSTRACT OF THE DISCLOSURE A vital rate decoder for actuating one of a plurality of output relays in correspondence with the frequency of an input signal applied thereto, comprising a main rate decoding processor for evaluating the frequency and duty cycle of the input signal by establishing permissible rate windows defined by predetermined tolerances such that the output device corresponding to a frequency can be actuated only when the input signal has a rate code falling in a respective rate window with a predeter-mined duty cycle tolerance.  The rate decoding processor produces plural checkwords having predetermined values based on failure-free rate decoding of the input signal. The checkwords are processed by a checking processor which produces a relay actuating signal only if valid checkwords are produced.  The checking processor uses the check-words to select and load predetermined bytes into a pair of vital counting registers which are then successively decremented.  The checking processor then compares the decremented counter register contents at each step to verify that the contents thereof bear a predetermined relationship such that the output device corresponding to the rate code of the input signal is actuated only until the counting registers reach a predetermined count and only so long as the comparison of the contents of the pair of counting registers bear the predetermined relationship.
Patent CA-1150124-A (CA)
Inventor: MURIOT EDWARD E
IPC: A61M39/20
Filed: 1980-11-24
Granted: 1983-07-19
Abstract: IMPROVED DRAIN SPOUT CAP FOR SUCTION BAG             ABSTRACT OF THE DISCLOSURE       An improved cap is provided for selectively sealing a tube, such as a drain tube, of a suction bag used in medical/surgical suction equipment. The cap is preferably a generally hollow truncated cone, closed at one end and open at the other end to receive the tube.  The inner structure of the cap generally defines two chambers. A first chamber has an inside diameter slightly larger than that of the tube. A plurality of axially oriented ribs are disposed on the inside surface of the first chamber to engage in sliding contact with the tube. A raised portion on at least one of the ribs acts as an intermediate stop which defines a first operative position of the cap. In this first operative position, air can pass through the channels defined by the inside of the first chamber wall, the ribs, and the tube. A second chamber has an inside diameter approximately equal to or slightly smaller than that of the tube. The cap is placed in a second operative position when the tube is forced beyond the intermediate stop and into the second chamber.          In this second operative position, the cap acts as an air-tight seal for the tube.
Patent CA-1145784-A (CA)
Inventor: BERGQVIST HAKAN G F
IPC: A63C19/00
Filed: 1980-11-26
Granted: 1983-05-03
Abstract: ABSTRACT        A surface covering for games arenas such as tennis courts comprising a slab formed of a plurality of regular polygon shaped regions, e.g. squares.  The polygon shaped regions are delimited by ribs which depend from the upper load bearing surface of the slab and which abut the surface to be covered, and are delimited by grooves in the upper surface.  Further ribs which depend from the upper surface are arranged to abut the surface to be covered, and radiate from the centre of each region, specifically along at least a part of each diagonal and each perpendicular bisector of each region when the regions are rectangular in shape.  The grooves and ribs allow small expansions or contractions of regions due to temperature differentials to be absorbed by the individual regions and allow larger changes to take place substantially in the plane of the covering, thus avoiding ridges and cavities which occur with known coverings.
Patent CA-1151991-A (CA)
Inventor: MANSOUR MANSOUR N
IPC: F23D11/12
Filed: 1980-12-10
Granted: 1983-08-16
Abstract: ABSTRACT      A method and burner tip for suppressing the produc-tion of oxides of nitrogen when burning a fuel in a combustion chamber containing a flame zone are described. The burner tip comprises at least one port for introduc-ing fuel into the combustion zone and at least one port for introducing a control gas into the combustion zone, where both the  fuel  and control gas are introduced substantially perpendicular to the direction of introduc-tion of combustion gas into the combustion zone.   The ports are laterally spaced apart from each other.   The control gas is used for controlled localized quenching of the flame zone and/or for controlled atomization of the fuel in the case of a liquid fuel to reduce the emissions of nitrogen oxides  (NOx).   By proper selection of the size and location of the fuel and control gas ports, and the quantity and velocity of the fuel and control gas introduced into the combustion zone, a stable flame with minimal emission of oxides of nitrogen can be obtained.
Patent CA-1126452-A (CA)
Title: Carbon fiber/flame-resistant organic fiber sheet as a   friction material
Inventor: CHULUDA PHILIP A
IPC: D21H17/68
Filed: 1980-12-12
Granted: 1982-06-29
Abstract: Abstract of the Disclosure Paper base friction material in the form of a porous, flexible interfelted fibrous sheet comprised of a mixture of 25 to 65 percent cellulose fibers, 5 to 20 percent carbon fibers, 5 to 20 percent flame-resistant organic fibers, fillers, and an oil resistant elastomeric sizing.  The friction material also includes a synthetic resin binder which may be incorporat-ed during preparation of the sheet or subsequently. In use, the paper base friction material is bonded to a supporting member, preferably metal, whereby it is useful as a friction element particularly in oil, such as in automotive automatic transmissions.
Patent CA-1156791-A (CA)
Inventor: CHARNOCK RONALD S
IPC: C09J4/06
Filed: 1981-02-06
Granted: 1983-11-08
Abstract: ABSTRACT     A structurally toughened heat resistant adhesive composition comprising a solution of a polyacrylic elastomer in polymerizable acrylate ester monomers.  The adhesive composition also contains an adhesion promoter, a cross-linking agent, a free-radical generator and a free-radical accelerator.  The adhesive compositions are generally used as two-part systems, and yield bonds with improved heat and solvent resistant properties.    The polymerizable acrylate ester monomers may be monofunctional or a combination of mono- and polyfunctional monomers.  Among the useful classes of monomers are alkyl and cycloalkyl acrylates, alkyl and cycloalkyl methacrylates, alkoxy acrylates and methacrylates, alkylene diacrylates and dimethacrylates.  A few of the preferred monomers are methyl methacrylates, lauryl methacrylates, isobornyl methacrylates, and tetrahydrofurfuryl methacrylates.    The preferred acrylic rubbers are generally the homopolymers of alkyl esters of acrylic or methacrylic acid; homopolymers of alkoxy esters of acrylic or methacrylic acid; or copolymers of either of these with a lower alkene.  Most preferred are the rubbers formed from the copolymerization of ethyl acrylate with 2-chlorethyl vinyl ether, or from the copolymerization of ethylene, methyl acrylate and a third monomer containing carboxylic curing cites.
Patent CA-1155241-A (CA)
Inventor: BELFORTE PIERO
IPC: H04Q11/04
Filed: 1981-02-19
Granted: 1983-10-11
Abstract: Abstract A diagnostic circuit for PCM connection networks comprises a selector followed by a series-to-parallel converter, designed to select the PCM group containing the channel to be tested, and to transfer in parallel the eight bits of the channel to a network control processor, and a logic network that decodes messages and commands from the processor and controls the bit pick-up and transfer in correspondence within a predetermined frame.  The whole circuit is manufactured as an integrated circuit and is suitable for direct dialogue with a microprocessor.
Patent CA-1156641-A (CA)
Inventor: NAWATA TAKANARI
IPC: A23F5/10
Filed: 1981-03-11
Granted: 1983-11-08
Abstract: OXYGEN AND CARBON DIOXIDE ABSORBENT AND PROCESS          FOR STORING COFFEE BY USING THE SAME     Abstract of the Disclosure:      An oxygen and carbon dioxide absorbent comprising (A) a particulate substance wherein the particles of a hydrous alkali substance are covered with separator particles, (B) iron powder and (C) an electrolyte and a process for storing coffee by using the same is disclosed.
Patent CA-1147507-A (CA)
Inventor: KOSUGI JUNICHI
IPC: A61L33/00
Filed: 1981-03-18
Granted: 1983-06-07
Abstract: ABSTRACT OF THE DISCLOSURE:         A composite material of de-N-acetylated chitin and fibrous collagen, which may be prepared by bringing the de-N-acetylated chitin and the fibrous collagen into mutual contact in an aqueous acidic medium followed by deacidifying the obtained product, the fibrous collagen being able to be partially replaced by gelatin and/or soluble collagen, and a shaped material derived from the composite material is excellent in mechanical strength, heat-resistance and biostability and advantageously employed in the field of medical materials, edibles such as edible casing and base materials for inmobilizing enzyme.
Patent CA-1155798-A (CA)
Inventor: MANIV SHMUEL
IPC: C23C14/34
Filed: 1981-03-30
Granted: 1983-10-25
Abstract: Abstract of the Disclosure Using 0 sputter deposition system to reactively deposit a material such as an oxide, it is relatively easy to achieve either an oxygen-doped film with appreciable metallic content or an oxide film. However it is difficult with known systems to obtain an intermediate film having an accurately controlled resistivity, transparency, and composition, such films being of much use in semiconductor applications, in displays and in photovoltaic cells.  It is now proposed that an apertured barrier be used to accurately fix the flow rate of target material to the substrate and in addition, that reactive gas flow be regulated and directed only to the immediate vicinity of the substrate.          In this way the composition of the film can be accurately fixed.  By establishing an r.f. field at the substrate, increased dissociation of the reactive gas can be achieved to render the gas more reactive and so enhance certain film properties such as transparency.
Patent CA-1152819-A (CA)
Inventor: NELSON RICHARD C
IPC: B32B27/12
Filed: 1981-04-08
Granted: 1983-08-30
Abstract: ABSTRACT     This invention relates to a process for coating a substratum sheet material, such as woven fabrics, by first removing from the substratum material any moisture that does normally exist therein, and then coating the substratum material with a coating composition with no moisture, air or other impurities being trapped between the substratum and the coating.  Novel products produced by this process comprise new compositions of sheet materials having improved weathering characteristics including stability against ultraviolet degradation for improved service in highly transparent or translucent coverings for roofs and solar devices.
Patent CA-1150432-A (CA)
Title: Portable telephone line test set
Inventor: MERRICK LLEWELLYN S
IPC: H04M3/28
Filed: 1981-04-09
Granted: 1983-07-19
Abstract: ABSTRACT OF DISCLOSURE A portable two wire line test set having a self-contained source of electrical energy for powering a hybrid circuit and first and second amplifiers. The first amplifier receives and amplifies voice signals transmitted over the two wire line and the second amplifier amplifies and transmits voice signals over the two wire line. Transducers are con-nected to both amplifiers to convert signals to audible sounds and vice versa. In an alternative embodiment a third tuned amplifier is included for detecting and amplifying a signal in a predetermined frequency range so that the identity and condition of particular two wire lines may be determined.
Patent CA-1156717-A (CA)
Inventor: WHITTLESEY CURTIS C
IPC: H01M6/50
Filed: 1981-04-21
Granted: 1983-11-08
Abstract: ABSTRACT OF THE DISCLOSURE          A zinc-chlorine battery plant system and method of redirecting the electrical current around a failed battery module.  The battery plant includes a power conditioning unit, a plurality of battery modules connected electrically in series to form battery strings, a plurality of battery strings electrically connected in parallel to the power conditioning unit, and a bypass switch for each battery module in the battery plant.  The bypass switch includes a normally open main con-tact across the power terminals of the battery module, and a set of normally closed auxiliary contacts for controlling the supply of reactants electrochemically transformed in the cells of the battery module.  Upon the determination of a failure condition, the bypass switch for the failed battery module is energized to close the main contact and open the auxiliary contacts.  Within a short time, the electrical current through the battery module will substantially decrease due to the cut-off of the supply of reactants, and the electrical current flow through the battery string will be redirected through the main contact of the bypass switch.
Patent CA-1157234-A (CA)
Title: Procede pour l'incineration catalytique de gaz residuaires renfermant en faible concentration au moins un compose du soufre choisi parmi cos, cs.sub.2, et les mercaptans
Inventor: VOIRIN ROBERT
IPC: B01J27/053
Filed: 1981-04-22
Granted: 1983-11-22
Abstract: Procédé pour l'incinération catalytique de gaz résiduaires renfermant, en faible concentration, H2S et/ou SO2, des composés organiques du soufre tels que COS, CS2, mercaptans, et éventuellement du soufre vapeur et/ou vési= culaire, comportant une étape d'hydrogénation transformant en H2S tous les composés soufrés suivie d'une étape d'oxydation catalytique pour transformer H2S en SO2. Le catalyseur de l'étape d'oxydation consiste en un support poreux, d'aire spécifique au moins égale à 5 m2/g et renfermant, en poids, 50 à 100 % d'un produit choisi parmi les oxydes de titane ou de zirconium, la silice et les zéolithes, et 50 à 0 % d'alumine, auquel on a associé un ou plusieurs composés de métaux appartenant au groupe constitué par Cu, Ag, Zn, Cd, Y, lanthanides, V, Cr, Mo, W, Mn, Fe, CO, Rh, Ir, Ni, Pd, Pt, Sn et Bi. L'emploi d'un tel catalyseur d'oxydation conduit un rendement pratiquement quantitatif de conversion de l'H2S en SO2, ce rendement se maintenant de manière durable dans le temps.